Gear Change, Function - GF27.60-D-3010H

Transmission 722.6 in MODEL 906.111/113/131/133/135/153/155/211/213/231/233/235/253/255/611/613/631/633/635/637/653/655/657/711/713/731/733/735 

Each shifting of gears is triggered by the electronic transmission control (ETC). Each shift sequence is assigned a control block. In each case this includes an overlap regulating valve, a holding pressure shift valve, a shift pressure shift valve, a command valve as well as an electromagnetically operated switchover valve (upshift/downshift solenoid valve).

Actuation of the solenoid valve switches over from stationary mode to the shift phase.

When the gear change is complete the solenoid valves are no longer actuated as the different gears are subject to a self-hold function in stationary mode.